Objective To investigate the effect of seven-step exercise regurgitation in stage I exercises on the risk of fall in patients with acute ST-elevation myocardial infarction. Methods At the time of admission, 119 patients with acute ST-segment elevation myocardial infarction undergoing percutaneous coronary intervention (PCI) were randomly divided into control group (n=58) and intervention group (n=61). All patients were given routine nursing within 7 days after operation. The patients in the intervention group were given the first three-step exercises based on the seven-step exercise regurgitation in stage I exercise apart from routine nursing within 7 days after operation. The risk of fallings was assessed on the 7th day after operation for the two groups. Result Compared with the control group, the risk of fallings on day five after operation in the intervention group was significantly lower than that in the control group (P<0.05). Conclusion The seven-step exercise of stage I cardiac rehabilitation can effectively reduce the risk of falling in patients with acute myocardial infarction after PCI.